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ELK Biotechnology
SKU:ELK9313
Human ALD(Aldosterone) ELISA Kit
Human ALD(Aldosterone) ELISA Kit
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$376.00 USD
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Human ALD(Aldosterone) ELISA Kit
Overview
Product name: | Human ALD(Aldosterone) ELISA Kit |
Reactivity: | Human |
Alternative Names: | ALD |
Assay Type: | Competitive Inhibition |
Sensitivity: | 9.41 pg/mL |
Standard: | 2000 pg/mL |
Detection Range: | 31.25-2000 pg/mL |
Sample Type: | serum, plasma and other biological fluids |
Assay Length: | 2h |
Research Area: | Metabolic pathway;Endocrinology;Hormone metabolism; |
Test principle: | This assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with Human ALD protein. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human ALD. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Human ALD in the samples is then determined by comparing the OD of the samples to the standard curve. |
Standard curve
Concentration (ng/mL) | OD | Corrected OD |
---|---|---|
2000.00 | 0.213 | — |
1000.00 | 0.357 | — |
500.00 | 0.689 | — |
250.00 | 0.895 | — |
125.00 | 1.139 | — |
62.50 | 1.537 | — |
31.25 | 1.887 | — |
0.00 | 2.213 | — |

Precision
Intra-assay Precision (Precision within an assay):CV%<8%
Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.
Inter-assay Precision (Precision between assays):CV%<10%
Three samples of known concentration were tested in forty separate assays to assess inter-assay precision.
Recovery
Matrices listed below were spiked with certain level of recombinant ALD and the recovery rates were calculated by comparing the measured value to the expected amount of ALD in samples.
Matrix | Recovery range | Average |
---|---|---|
serum(n=5) | 81-95% | 88% |
EDTA plasma(n=5) | 90-105% | 97% |
Heparin plasma(n=5) | 89-103% | 96% |
Linearity
The linearity of the kit was assayed by testing samples spiked with appropriate concentration of ALD and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Matrix | 1:2 | 1:4 | 1:8 | 1:16 |
---|---|---|---|---|
serum(n=5) | 95-104% | 87-96% | 88-101% | 82-95% |
EDTA plasma(n=5) | 95-104% | 93-105% | 82-101% | 91-103% |
Heparin plasma(n=5) | 81-94% | 96-105% | 92-103% | 92-106% |